1900.] Gatalocjitc of the Colcoptcra of South Africa. 481 



median part very projecting ; scutellum sub-scrobiculate ; elytra 

 very convex, finely punctato-striate, intervals slightly convex, sub- 

 coriaceous ; eighth stria obliterated in the basal part for one-third 

 of the length ; under side and legs densely pubescent ; anterior tibiae 

 strongly five-dentate outwardly. 



Male : Prothorax strongly declivous from near the base to the 

 apex the median part of which is much recurved and slightly 

 emarginate in the centre, the plane upper part of the declivity is 

 vaguely punctulate, and there is on each side of the base one strong, 

 triangular, very conspicuous tooth, and three smaller very distinct 

 ones in the median part ; in the great development the lateral 

 teeth are produced into a long vertical compressed horn with a 

 triangular lateral projection at the base, behind, and there is only 

 one median tooth, at the base of the lateral tooth or horn there is 

 an inner deep impression. 



Female : The transverse cephalic carina is slightly further re- 

 moved from the apex than in the male ; the whole surface of 

 the prothorax is covered with very dense, rugose punctures, the 

 median part of the apex is much less recurved than in the male, 

 and there is a median declivity divided in two by a transverse 

 median smooth ridge one-third of the width in length ; the intervals 

 oi elytra are more coriaceous. 



Length 23-24 mm. ; width 16-16J mm. 



Hah. Natal (Durban), Southern Ehodesia (between the Zambesi 

 and Limpopo Rivers). 



BOLBOCERAS DAMARINUM, n. SpeC, 



Plate XXXVI. , fig. 4. , 



Male : Head and prothorax piceous red ; elytra dark red, shining ; 

 labrum very deeply emarginate, head very roughly punctate, clypeus 

 sinuate laterally, truncate at tip, strongly carinate laterally and at 

 apex, not angular at the junction with the canthus ; prothorax 

 sinuate at apex, but with the median part not recurved, it has a 

 round, deep, median impression reaching from near the apex to 

 about the median part, this impression has two somewhat sharp 

 tubercles at the apex, and there is a faint trace of a callus on the 

 sides, the whole of the surface, with the exception of a transverse 

 strip above the basal sulcus, is covered with deep, closely set 

 irregular punctures, denser and scrobiculate on the sides, the two 

 upper tubercles, as well as a small area round them, are impunctate; 

 and there is a faint trace of a longitudinal sulcus in the centre of the 



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